Deadliest Outbreak of Ebola on Record

New outbreak has killed more than 460 people across three African countries.
1:47 | 07/02/14

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Transcript for Deadliest Outbreak of Ebola on Record
To the urgent headline from the world health organization, sounding the alarm after the deadliest outbreak of ebola on record. Now killing more than 460 people across three african countries. Dr. Richard Besser who has studied this up close on the new fears tonight and whether this deadly disease could travel here. Reporter: We saw the deadly power of ebola first hand in Uganda. A disease so dangerous, anyone going on the ward took extreme precautions. There's not one speck of my body that is exposed. Making sure that every inch is covered is absolutely essential. Reporter: Today, the world health organization is struggling to contain this unprecedented outbreak spreading in part from trade across the borders of three countries: Liberia, Guinea, and Sierra Leone. There is no cure. In this outbreak, 62% of infrequent people have died. Ebola spreads by close contact with body fluids of infected people. When I visited this ward in 2012, when the team touched a patient, they were quickly sprayed down with disinfectant. I have to say that there are few things that I've done in medicine that are as nerve-racking as going into this place. Reporter: Tonight a new fear. Some frightened patients staying away from hospitals and further spreading the disease. The Numbers are stunning. Dr. Besser is with us now. We've seen this spread across three countries in Africa. A lot of people are wondering could it come here? Very slight risk. You only spread this disease when you're very sick with symptoms and they would never let you on an airplane. It is possible for a hospital worker to travel here. While it wouldn't spread around the U.S., it's a world wild problem. Thank you.

This transcript has been automatically generated and may not be 100% accurate.

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